How can I combine these two formulas?

Question

Example

I want to combine these two formulas but can't seem to the ' and " right?

I want to output a table that has the data from the source tables whose sheet name is checked in sheet FL-elever:

• Formulas to join:

• Checked names to filter:

• Source tables format:

Answer 1

You could do this with an Apps Script Custom Function.

First, open a bound script by selecting Tools > Script editor, and copy the following function to the script (check inline comments):

function POPULATE_TABLE() {
  var output = new Array(6).fill("").map(function() { 
    return new Array(5).fill(""); // Initialize the 2D array you will output
  });
  var ss = SpreadsheetApp.getActive();
  // Get the rows in which checkbox is marked:
  var FLelever = ss.getSheetByName("FL-elever");
  var checkedNames = FLelever.getDataRange().getValues().slice(1).filter(function(row) {
    return row[5] === true;
  });
  checkedNames.forEach(function(checkedName) { // Iterate through each row with marked checkbox
    var sheetName = checkedName[0] + "-" + checkedName[1]; // Get sheet name (column A + "-" + column B)
    var sheet = ss.getSheetByName(sheetName); // Get corresponding sheet
    if (sheet) { // Check that sheet exists
      // Get the source table from the corresponding sheet:
      var firstRow = 2;
      var firstCol = 2;
      var numRows = sheet.getLastRow() - firstRow + 1;
      var numCols = sheet.getLastColumn() - firstRow + 1;
      var values = sheet.getRange(firstRow, firstCol, numRows, numCols).getValues();
      // Iterate through the source table and add the existing values to output:
      for (var i = 0; i < values.length; i++) {
        for (var j = 0; j < values[i].length; j++) {
          if (output[i][j] !== "" && values[i][j] !== "") {
            output[i][j] = output[i][j].concat(", ");
          }
          output[i][j] = output[i][j].concat(values[i][j]); // Concatenate values
        }
      }
    }    
  });
  return output;
}

Once it is defined, you can use this function the same you would any sheets built-in function:

Reference:

• Custom Functions in Google Sheets